From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- third_party/rust/objc/examples/example.rs | 45 +++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 third_party/rust/objc/examples/example.rs (limited to 'third_party/rust/objc/examples') diff --git a/third_party/rust/objc/examples/example.rs b/third_party/rust/objc/examples/example.rs new file mode 100644 index 0000000000..5346b620fb --- /dev/null +++ b/third_party/rust/objc/examples/example.rs @@ -0,0 +1,45 @@ +#[macro_use] +extern crate objc; + +use objc::Encode; +use objc::rc::StrongPtr; +use objc::runtime::{Class, Object}; + +fn main() { + // Get a class + let cls = class!(NSObject); + println!("NSObject size: {}", cls.instance_size()); + + // Inspect its ivars + println!("NSObject ivars:"); + for ivar in cls.instance_variables().iter() { + println!("{}", ivar.name()); + } + + // Allocate an instance + let obj = unsafe { + let obj: *mut Object = msg_send![cls, alloc]; + let obj: *mut Object = msg_send![obj, init]; + StrongPtr::new(obj) + }; + println!("NSObject address: {:p}", obj); + + // Access an ivar of the object + let isa: *const Class = unsafe { + *(**obj).get_ivar("isa") + }; + println!("NSObject isa: {:?}", isa); + + // Inspect a method of the class + let hash_sel = sel!(hash); + let hash_method = cls.instance_method(hash_sel).unwrap(); + let hash_return = hash_method.return_type(); + println!("-[NSObject hash] return type: {:?}", hash_return); + assert!(hash_return == usize::encode()); + + // Invoke a method on the object + let hash: usize = unsafe { + msg_send![*obj, hash] + }; + println!("NSObject hash: {}", hash); +} -- cgit v1.2.3